AMD EPYC 4364P vs AMD Ryzen 9 5900 Comparison

Head-to-Head Benchmarks

The recorded benchmark data splits 17 tests between two very different AMD processors: the Ryzen 9 5900, a 12-core desktop part from the 5000 series, and the EPYC 4364P, an 8-core server/workstation chip from the EPYC 4004 series. The EPYC 4364P wins 11 of the 17 head-to-head tests, while the Ryzen 9 5900 takes 6. However, the margin of victory tells a more nuanced story than the raw win count.

The EPYC 4364P's cleanest sweep comes across the Cinebench suite. In Cinebench R15 multicore, it scores 2982 against the Ryzen's 2906, a 2.5% lead. The single-core R15 test shows 420 versus 410, a 2.4% edge. Moving to Cinebench R20, the EPYC leads by 2.6% in both multicore (12427 vs 12110) and single-core (1754 vs 1709). The Cinebench R23 results repeat the pattern: the EPYC scores 29589 against 28834 in multicore and 4177 against 4070 in single-core, both 2.6% gaps. These are consistent, narrow margins across all six Cinebench tests, indicating that the EPYC's higher clock speeds provide a steady advantage in rendering workloads regardless of thread count.

The PassMark suite reveals where the Ryzen 9 5900 fights back. The largest single victory for the Ryzen comes in PassMark find prime numbers, where it scores 213 against the EPYC's 177, a commanding 20.3% lead. Integer math shows a similar story: 128641 versus 107775, a 19.4% advantage. Data encryption favors the Ryzen by 8.6% (26247 vs 24174), and floating point math gives it a 3.3% edge (69124 vs 66946). Data compression is a narrow Ryzen win at 0.8% (411453 vs 408220), while multithread performance is essentially tied, with the Ryzen ahead by just 0.3% (33969 vs 33883).

The EPYC's wins in the remaining PassMark tests are substantial. Extended instructions show a 15% EPYC advantage (31605 vs 26859). Random string sorting favors the EPYC by 10.3% (48344 vs 43386). Single-thread performance goes to the EPYC by 5% (3619 vs 3439), and physics tests give the EPYC a 4.9% edge (1785 vs 1697).

The pattern is clear: the EPYC 4364P wins every Cinebench test and most latency-sensitive or single-thread-heavy workloads, while the Ryzen 9 5900 dominates math-heavy and encryption workloads by substantial double-digit margins. The two processors land in nearly the same overall percentile, both at 89% against all CPUs, with average benchmark scores of 46971 for the Ryzen and 45970 for the EPYC.

FAQ

Q: Which processor has the higher boost clock?

A: The AMD EPYC 4364P boosts to 5.40 GHz, while the AMD Ryzen 9 5900 reaches 4.70 GHz. The EPYC also has a higher base clock at 4.50 GHz compared to 3.00 GHz for the Ryzen.

Q: How many cores and threads does each CPU have?

A: The Ryzen 9 5900 has 12 cores and 24 threads. The EPYC 4364P has 8 cores and 16 threads. Despite having fewer cores, the EPYC wins the majority of head-to-head benchmark tests.

Q: What is the largest benchmark margin between the two?

A: The Ryzen 9 5900 wins PassMark find prime numbers by 20.3% (213 vs 177). The EPYC 4364P's largest win is a 15% lead in PassMark extended instructions (31605 vs 26859).

Q: Do both processors support ECC memory?

A: Yes, both the Ryzen 9 5900 and the EPYC 4364P list ECC memory support as true in the database.

Q: Which CPU has better single-thread performance?

A: The EPYC 4364P wins every single-thread benchmark recorded: Cinebench R15 single-core by 2.4%, Cinebench R20 single-core by 2.6%, Cinebench R23 single-core by 2.6%, and PassMark single-thread by 5%.

Q: What are the average benchmark scores for each processor?

A: The Ryzen 9 5900 has an average benchmark score of 46971, placing it 0.1% behind the AMD Ryzen AI 9 HX PRO 375 and 0.2% ahead of the Intel Core i7-13700K. The EPYC 4364P averages 45970, essentially tied with the AMD EPYC 7303 and Intel Core i7-14700HX.

Where Each One Wins

The Ryzen 9 5900 is the clear choice for workloads built around integer arithmetic and cryptographic operations. Its 19.4% lead in integer math and 20.3% advantage in prime number finding suggest strong raw computational throughput for tasks like financial modeling, scientific simulation, and hashing. The 8.6% edge in data encryption further reinforces this profile. Floating point math also favors the Ryzen by 3.3%, making it competitive for general scientific computation despite losing the Cinebench rendering tests.

The EPYC 4364P wins where per-thread responsiveness and instruction efficiency matter most. Its 5% lead in single-thread performance and 2.6% edge across all Cinebench single-core tests indicate better performance in lightly threaded applications, database queries, and interactive workloads. The 15% advantage in extended instructions points to superior handling of SIMD and advanced instruction set extensions, which benefits multimedia processing and certain compiled workloads. Random string sorting, where the EPYC leads by 10.3%, suggests better memory access patterns for sorting and data manipulation tasks.

For multithreaded rendering, the EPYC's Cinebench wins across R15, R20, and R23 show that its 8 cores with higher clocks outperform the Ryzen's 12 cores, despite the Ryzen having 50% more cores. The near-tie in PassMark multithread (0.3% Ryzen lead) confirms that the EPYC matches or exceeds the Ryzen in most parallel workloads, while the Ryzen's math and encryption strengths remain its differentiators.

Specification Differences

The two processors differ on nearly every core specification. The Ryzen 9 5900 uses 12 cores and 24 threads, while the EPYC 4364P uses 8 cores and 16 threads. Base clocks are 3.00 GHz for the Ryzen and 4.50 GHz for the EPYC, with boost clocks of 4.70 GHz and 5.40 GHz respectively. Thermal design power differs significantly: the Ryzen is rated at 65 watts, the EPYC at 105 watts.

Socket compatibility separates the platforms entirely. The Ryzen 9 5900 uses AMD Socket AM4, while the EPYC 4364P uses AMD Socket AM5. Memory support also differs: the Ryzen uses DDR4 with dual-channel configuration and 51.2 GB/s bandwidth, while the EPYC uses DDR5 with dual-channel configuration and 83.2 GB/s bandwidth. Both support ECC memory, but the PCIe capabilities differ: the Ryzen offers Gen 4 with 20 lanes (CPU only), while the EPYC offers Gen 5 with 28 lanes (CPU only).

The EPYC includes integrated Radeon Graphics, while the Ryzen 9 5900 has no integrated graphics listed. The EPYC has a locked multiplier, while the Ryzen is multiplier unlocked. Release dates are over three years apart: the Ryzen launched on January 11, 2021, and the EPYC on May 20, 2024. The EPYC has a launch MSRP of $399. The Ryzen's part number is 100-000000062; the EPYC's is 100-000001477.

Architecture Differences

The architectural gap is generational. The Ryzen 9 5900 uses Zen 3 architecture under the Vermeer codename, fabricated on TSMC's 7 nm process with 8,300 million transistors across a dual-die design measuring 2x 74 mm². The EPYC 4364P uses Zen 4 architecture under the Raphael codename, fabricated on TSMC's 5 nm process with 6,570 million transistors on a single 71 mm² die. The process shrink explains how the EPYC achieves higher clocks while maintaining a similar transistor count per area.

Cache layouts diverge significantly. Both allocate 64 KB of L1 cache per core, but L2 cache doubles on the EPYC: 1 MB per core versus 512 KB per core on the Ryzen. L3 cache is where the Ryzen compensates, offering 64 MB total versus 32 MB shared on the EPYC. The Ryzen's larger L3 cache likely contributes to its strong performance in integer math and encryption, where large working sets benefit from the additional cache capacity.

The EPYC's integrated Radeon Graphics marks a notable feature difference, providing display output capability that the Ryzen lacks entirely. The EPYC's Gen 5 PCIe support with 28 lanes versus the Ryzen's Gen 4 with 20 lanes reflects its server positioning, offering double the bandwidth and more expansion capability. The EPYC's DDR5 memory interface with 83.2 GB/s bandwidth represents a 63% theoretical bandwidth increase over the Ryzen's DDR4 implementation at 51.2 GB/s.

The Verdict

The data supports a clear split based on workload profile. Pick the AMD Ryzen 9 5900 for math-intensive and encryption-heavy tasks. Its 20.3% lead in prime number finding, 19.4% advantage in integer math, and 8.6% edge in data encryption make it the stronger choice for cryptographic workloads, scientific computing, and any application that stresses ALU throughput. The 3.3% floating point advantage and 0.8% data compression win add to its case for general computational work. Its 65-watt TDP and unlocked multiplier also make it a more flexible part for desktop builds.

Pick the AMD EPYC 4364P for rendering, single-threaded responsiveness, and server workloads. It wins all six Cinebench tests with margins between 2.4% and 2.6%, indicating consistent rendering superiority despite having 4 fewer cores. The 15% extended instructions lead and 10.3% random string sorting advantage point to strong performance in data processing and SIMD-heavy applications. Its 5% single-thread lead and 4.9% physics advantage make it the better choice for latency-sensitive workloads. The EPYC's DDR5 support, Gen 5 PCIe, and integrated graphics position it as a more modern platform for workstation or server deployments, though its 105-watt TDP and locked multiplier reduce overclocking flexibility.

Both processors sit at the 89th percentile against all CPUs, with average scores within 2.2% of each other. The Ryzen's nearest rivals include the AMD Ryzen AI 9 HX PRO 375 (0.1% behind) and Intel Core i7-13700K (0.2% behind), while the EPYC's closest comparisons are the AMD EPYC 7303 and Intel Core i7-14700HX, both essentially tied. The choice ultimately depends on whether the workload favors the Ryzen's core count and cache capacity or the EPYC's clock speed, newer architecture, and platform features.